Word.ws English Dictionary

emirp

/ˈiːˌmɝp/

emirp noun: a prime number that becomes a different prime when its decimal digits (or digits in some specified other base) are reversed.

Noun

emirp (plural emirps)

  1. A prime number that becomes a different prime when its decimal digits (or digits in some specified other base) are reversed.
    • The sequence of emirps begins: 13, 17, 31, 37, 71, 73, 79, 97, 107, ...
    • The first few emirps in base 12 (using the convention T for ten and E for eleven) are: 15, 51, 57, 5E, 75, E5, 107, ...

Forms of emirp

pluralemirps

Origin of emirp

prime spelled backwards.

Questions about emirp

What does emirp mean?
Emirp means a prime number that becomes a different prime when its decimal digits (or digits in some specified other base) are reversed.
What part of speech is emirp?
Emirp is a noun.
How do you pronounce emirp?
Emirp is pronounced /ˈiːˌmɝp/.
What is the plural of emirp?
The plural of emirp is emirps.

Words near emirp in the dictionary

  1. Emiratizing
  2. Emiri
  3. Emirian
  4. Emirians
  5. Emiris
  6. emirp
  7. emirps
  8. emirs
  9. emirship
  10. emirships
  11. EMIs

Source and license

Adapted from Wiktionary: emirp (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “emirp.” Word.ws, https://word.ws/emirp. Based on Wiktionary, CC BY-SA 4.0.